I am absolutely new to Linux on Ubuntu Server 18.04. I Have installed portainer folowing a guide.... At the end I think I have been able to install it correctly. On trying to start portainer it is starting.
I have not installed a desktop environment. As per the guide then it tells me to log into my own IP with the port to configure Portainer. From where can I enter this ip; I tried installing chromium browser but the error returned is GTK warning cannot be displayed.
If anybod could help

Not sure how Chrome can run without one.
Which guide?

IMHO, the difference between a server and a desktop is that servers usually run in a headless (no X11 or windows manager), and you connect to the server from another device -- i.e., a desktop. Connecting to the server for administration usually occurs in a secure shell (ssh). So perhaps they want you to ssh to the ip address of your server, with the -p flag used to provide the port -- something like "ssh username@ipaddress -p port".

However, if it is a browser based configuration, then perhaps they mean for you to connect to your server with a browser, in which case you open up the browser on a desktop computer, and go to the url http://serversip : port.

If you are in the headless environment of the server, and want to connect over the command line interface, you could use and command-line browser like lynx, or eww (an emacs package).